Looking for a safe returns than you must know the rule that how much amount should be in a fixed deposit. generally this formula is 100-Age= X where X stands for amount you should have in fixed deposit.
Senior citizens can get upto 9.25% interest rate which can go upto 10% for deposits above 15 Lakhs. However a word of caution is that the interest earned from fixed deposits is taxable and interest earned from saving account upto Rs 10,000 is tax free.